Deconcentrator



March l2, 1,9297. c. T. McGlLL 1,704,989

DEGONCENTRATOR Filed May 5, 1927 2 sheets-sneer 1 f" fw ULM/w I @mmm March 12, 1929. C. T, MCGILL 1,704,989

I n lDECONCENTRA'I'OR V Filed May 5, 1927 2 sneetssneef, 2

@Heilung Patented Mar. 12K, 1929.

1,704,989 PATENT oFFlcE.

UNITED STATES CHESTER T. MGGILL, OF ELGIN, ILLINOIS,

ASSIGNOR T0 ELGIN BO-FTENECR CORPORA- TIoN, or E'LGIN, ILLINOIS, A coRroRA'I'IoNor ILLINOIS.

DECONCENTRATOR.

Applicationmed May 5,

or otherwise.

The equipment, according to this invention, provides an eilicient combination with a boiler for the self-cleaning thereof, whereby the frequent blow-down. of the boiler is eliminated.

A furtherj object ofthis invention is .to provide a 'deconcentrator or internal blow-v down system which will entirely eliminate the accumulation of suspended solids in a v boiler, and by means of which a boiler may be kept clean while in operation without excessive blowing-down and without washing the boiler out by hand at regular'intervals.

One of the principal objects of this invention is to provide a system which will accomplish advantageous resultsin connection with small boilers, particularlyy steam shovels and locomotive boilers where the expense orthe placing of a settling chamber on the exterior of the boiler is'inpractical owing to the lack of space or for 1other reasons.

This invention is an improvement over the iventors Patent No. 1,593,700. The main difference in this particular invention consists in te creating of a circulation of boiler water and' scale forming solids while in a' suspended form, through a uiet chamber o r precipitating tank within t e boiler where the solids are precipitated from the water in circulation, and the water iscarried from the precipitatingr tank into the circulation of the boiler water. n'

Other objects of this invention will appear from the following detailed description of the device disclosed in the two Sheets of drawings which are herewith made apart of this application. A

Figure 1 illustrates a side sectional elevational view of a return tubular boiler.

Figure 2 represents an end sectional view of the boil'er, taken `along line 2-2 of Figure 1.

1927. Serialv No. 189,110.

`of the precipitating chamber, with parts. broken away.

Figure 4 represents an end view of the precipitating chamber. y

Figure l5 illustrates a sup orting method for attaching the precipitating chamber to the interior of the boiler.

` Figure G'illustrates a sectional view of a fitting provided with a funnel arrangement through which steam bubbles pass and create i aV circulation of lwater from they sedimentation chamber 3.

When a boiler is in operation, making steam, the heat evaporating the water into steam, the steam bubbles naturall seek their; place above the water level in t e boiler 1, and this is what creates a circulation of the water. As a .portion of the steam bubbles will find their way within a funnel portion 2, these steam bubbles'will seek the water line, carrying with them a circulation of water into' a settling or precipitating chamber 3. The water is carried from the entering end of the settling chamber as at 2, and flows through to the opposite end of the settling chamber 3, and out through a suitable fitting 4 on the opposite end of the precipitating or settling chamber 3. The ttlng 4 is rovided with a funnel arrangement 5 t rough which steam bubbles pass and create a ciry bubbles entering the funnel 2 naturally seek an outlet above the water line and are car ried into the steam space within the boiler through openings 6 along the top of the settling chamber 3, i

In this invention, the suspended solids will accumulate in the bottom portion of the settling chamber 3 'and concentrate there in a ver heavy, thick form from which they may e readily blown down by the opening of the valve through the blow-down 8` and 9 whichl are connected in. open` communication with aperforated blow-down ipe 10 positioned within the chamber 3 and aving a series of openings 11 for the purpose of equally discharging the water from chamber 3 to the blow-down pipe line 10. The precipitation of the suspended matter will accumulate so heavily and thick within the settling chamber 3 that in blowing out ten ulating the flow so that `a suiiicient amount or fifteen gallons of water from the chamber 3, the water will carry all the way. from one-l third to one-half solid matter or precipiclosed in Figure 6 of the drawings, for the purpose of inducing the flow of water from the sedimentation chamber 3, The type of device disclosed in Figure 6 clearly illustrates a preferred form, open at the top and bottom, thereby providing a means `for the steam bubbles and water in the natural current and circulation of' the boiler water to pass into the tunnel 5 up through the nozzle *andl si hon water from. the sedimentation cham er 3. The'w'ater that passes up= through the nozzleto ether with the water 'drawn from the' se imentation chamber,

flows through the top of the fitting 4, the water 'then passing down into .the natural current of the boiler water and passes away in circulation. The fitting 4 aids materially in regulating the rapidity of the How of water that passes through chamber 4, thus regof water will pass through the sedimentation chamber at a rate which will allow sedimentation to take place. functions to pick up steam bubbles and hot water from the natural circulation ofthe' water in the boiler and passes it into the sedimentation chamber 3, where the steam bubbles leave the water and the water travels to the outlet. During the course of water traveling in the sedimentation chamber 3,' the precipitation ofthe suspended solids takes ace and the puried water is carried back into the boiler proper. The princi' le of operationfof the sedimentation cham er is that the water in the boiler outside of the chamber is in continuous agitation during the operation of the boiler,` but, While passing through this sedimentation chamber, it is comparativel quiet, therebyallowing the c suspended soli s to settle from the'water "and vit'ma before the water reente'rs the'boiler proper.

The sedimentation chamber may be of' any.

shape or form which would function to make it adaptable for different styles of boilers, have as many supply inlets, similar to t e inlet 2 and discharge outlet or ejector nozzles, as at 4, as may be required. Also the steam outlet from the chamber 8 may have as many or as few openings as re- The fitting 2 also while in operation without eXcessive-blowing down, particularly a 'type of small boilers, steam shovels and the like, wherein it is not'practical to havey a settling chamber on the exterior of the boiler as disclosed in this inventors Patent No. 1,593,700. The".

boiler may be operated in the usual way, the scale forming solids being chemically treated in order to prevent theformation of scale, the prime purpose of this invention being to create a movement of the boiler water with its suspended scale forming solids through a quiet. chamber or precipitating tank within the boiler where the solids -are'precipitated from the water passing therethrough and the water is then carried from the precipitating tank into the circulation of the boiler water.

In this invention, the scale :forming solids will 'accumulatein such a manner as to allow the operator to remove them ata minimum expense, in time, loss of heat units, hot

water and the like. As a matter of fact, this system provides means orrself-cleaning the boiler and eliminates the need for frequent blowing stances, where it becomes necessary to re- .move the boilers from the line, empt them and clean them out in order to get ri of the concentration of scale forming 'solids vwhich accumulate by the continued evaporation of water. A` boiler, by this invention, can be kept clean while in operation.-v

The water and steam bubbles-entering element or elements 2, pass into the setting chamber, where the steambubbles are separated from the water and pass into the steam space of the boiler' through openings 6. The precipitated solids carried with the steam bubbles and water into settlin chamber 'through element-2, settle into t e quiet space at the bottom of chamber The functioning of the element 4 is on the same principle as in element 2, except thatthe steam bubbles do not pass into chamber 3. The steam bubbles` pass up. through special iitting 4 and means 4u therein for creating a circulating effect on water through' down, as under ordinary circumchambeix. This watertogether with the steam bubbles and water in the circulation'v of the boiler water, passes up through the top of element 4 and helps to regulate the amount of water which passes through chamber 3.

It is'understoodl that there may be any Cil moines@ nulnber of the supply elements 2 or discharge elements 4 connected to chamber 3 located other than at the ends ot the chamber.

It is also understood that this method of accumulating precipitated solids in. a chamber within a boiler is different from methods formerly employed wherein the circulation of boiler water was created by feeding the boiler feed water into the chamber illustrated as 3.

With this arrangement, the boiler feed water does not enter and the advantage is that it operates whether water is being pumped to the boiler or whether the boiler feed pump is lying idle; so long vas there is any tire or heat under the boiler and any steam being made, this arrangement continues to operate and there is no possibility ofy the chamber becoming inetlicient through the concent ation of scale forming solids.

lWhat I claim is l. In combination with a boiler, a seditively far from the. diverting means for returning purified Water from the chamber to the boiler, means for discharging steam from the chamber into the boiler, means for discharging precipitated solids from the chamber to the outside of the boiler, means for coacting with the returning means to induce flow through the sedimentation chamber.

2. In combination with a boiler, a sedimentation chamber located Within the boiler having a capacity sutiicient to permit the separation of suspended solids from the water passing therethrough, means for diver-ting into the chamber a mixture of steam and Water from a normal current of water circulating in the boiler, means spaced relatively ar from the diverting means for returning puriied water from the chamber to the boiler, means for discharging steam from the chamber into the boiler, means for discharging precipitated solids from the chamber to the outside of the boiler, in which said discharging means for precipitated solids comprises a blow7 down pipe line having an end thereof within the chamber adjacent the bottom thereof, and perforated extensions in open communication. With said end, said perorations being downwardly directed, and means for coacting with the returning means to induce iow through the sedimentation chamber.

In combination with a boiler, a sedimentation chamber located within the boiler having a capacity sutlicient to permit the separation of suspended solids from the water Apassing there through, a rtunnelshapcd device for diverting into the chamber a mixture ot steam and water from a normal current of water circulating intheboiler, means spaced relatively tar from the diverting means for returning puritied water from the chamber to the boiler, means 'for discharging steam trom the chamber into the boiler, means for dicharging precipitated solids from the chamber to the outside of the boiler, and means for coacting with the returning means to induce flow through the sedimentation chamber.

4. In combination with a. boiler, a sedimentation chamber located Within the boilery having a capacity sumcient to permit the separation of suspended solids from the water passing there through, a funnel-` shaped' device for diverting into the chamber a mixture of steam and Water from a normal current ot water circulating in the boiler, means spaced relatively far from the diverting means for returningpuritied water from the chamber to the boiler, means or discharging steam trom the chamber into the boiler, means for discharging precipitated solids `from the chamber to the outside of the boiler, means for coacting with the vreturning means to induce iow through the sedimentation chamber, and a suitably formed fitting connected with the returning means for creating a uniform circulation of water through the chamber.

5. In combination with a boiler, a sedimentation chamber located within the boiler having a capacity sufficient to permit the separation of suspended Solids from the water passing there through, a funnelshaped device for diverting into the chamber a mixture of steam and water from a normal current of water circulating in the boiler, means spacedlrelatively far from the diverting means for returning purified water from the chamber to the boiler, means for discharging steam rom the chamber into the boiler, means for discharging precipitated solids from the chamberto the outside of the boiler, means for coacting with the returning ,means to induce How through the sedimentation chamber, said returning means comprising a\ fitting having an inlet connected with said chamber, an outlet to the boiler,`

.ber a mixture of steam and water fromv a.

ceu

normal marroni', of Water oiicuiaiiig in filo boiler, means spaced ireiativeiy fai" 'from the diverting' means for 'otm'niig purified Waer from the chamber to the boiler, means foi dischmgili4 steam 'from the chamber into die boiler, means for discharging precipi- Laed soiids from tho Chamber to the outside of the ooiiei7 means for coasting Wih the returning memos io induce Sow thi'fmgh the sodimanmtion iiambei, said returning means compi-isili# o, fitting .having au inlet commented with saisi ohambei, an outiet o ih@ ivoiiei7 o, second inot cominniiioaing; with the boii-e hoiow the Water lei/oi, moans in said sommi .inio 'for creating a uiii'foim oircuiition of 'water 'giiroughfho oiiai'nber, o, funnel-shaped device atimched to said second inicia? and suitable moans ioiA hoidiiig iii@ chamber in operative relationship Within the boiiei.

iii tosimoiiy wheioo affix my signature.

CHESTER T, MGGI'ZL. 

